GIVIMO 25-ft x 12-in PVC Flexible Duct Hose for Utility Blower and Exhaust Fan Fits 12.3-in Fan Diameter with D Rings Adjustable Draw Ropes and High Carbon Wire Spring for Basement Tunnel Farm Factory Ventilation and Chemical Fume Exhaust

Sized for 12.3-in Fan Diameters: Cuff suits a 12.3-in / 31.2-cm fan diameter on 12-in utility blowers, and the blower or exhaust fan itself is NOT included in this package

High Carbon Wire Spring Holds the Bore: A thickened high carbon wire spring backed by wear-resistant industrial adhesive tape keeps the 25-ft bore open under blower suction

Adjustable Draw Ropes Seal the Mouth: Thick ropes adjust to fit the duct mouth size, giving a good-sealing connection at the fan that keeps working efficiency high through the full 25-ft run

Factories Basements Tunnels and Farms: Serves duct fans and vent exhausts across factories, basements, farms, chemical areas, tunnels, and automobile manufacturing bays

Flexible Vinyl on Woven Polyester: Hard-wearing flexible vinyl woven with polyester leaves a smooth inside wall for airflow, while D-shaped rings let the run hang overhead clear of walkways

Specification: Type: Flexible Fan Ducting; Length: 25 ft / 7.6 m; Suits Fan Diameter: 12.3 in / 31.2 cm; Nominal Blower Size: 12 in; Wall Material: Flexible Vinyl Woven with Polyester; Reinforcement: Thickened High Carbon Wire Spring with Industrial Adhesive Tape; Inside Wall: Smooth; Hanging: D-Shaped Rings; Cuff: Adjustable Ropes; Environment Temperature: -20 to 180 F / -28 to 82 C; Shipping Weight: 9.7 lb / 4.4 kg; Carton Size: 14.2 x 13.8 x 7.7 in / 36 x 35 x 19.5 cm; Blower or Exhaust Fan: NOT Included